When we dissolve NaCl in water, the ions are held in a rigid cage of water molecules. It takes less energy to activate these molecules, so the specific heat of the water decreases. The greater concentration of NaCl, the lower the specific heat capacity of the solution.
Answer:
An electric current passing through a coil of wire gives a strong form of magnetism called electromagnetism. When the electric current passes through a single straight piece of wire the electromagnetism is weak.
Explanation:
Answer:
Question 1: protons and electrons
Question 2: atomic number
Explanation: trust me
Average velocity: 0.4 m/s to the left
Explanation:
The average velocity of an object is equal to the ratio between the displacement of the object and the time taken:
where
d is the displacement (the change in position of the object)
t is the time elapsed
For the bug in this problem, we have:
(starting position)
Then at the end of the time interval (5 s), the final position of the bug is
(to the left of the origin: we take left as negative direction)
So the displacement is
(left)
While the time interval of the entire trip is
Therefore, the average velocity is
Which means 0.4 m/s to the left.
Learn more about average velocity:
brainly.com/question/8893949
brainly.com/question/5063905
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